Warning: Permanently added '10.128.1.50' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.051081] syz-executor852 uses obsolete (PF_INET,SOCK_PACKET) [ 42.064881] ------------[ cut here ]------------ [ 42.070320] WARNING: CPU: 1 PID: 6458 at net/ipv4/route.c:1236 ip_rt_bug+0x1d/0x30 [ 42.078182] Kernel panic - not syncing: panic_on_warn set ... [ 42.078182] [ 42.085573] CPU: 1 PID: 6458 Comm: syz-executor852 Not tainted 4.19.114-syzkaller #0 [ 42.093459] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.102936] Call Trace: [ 42.105539] dump_stack+0x188/0x20d [ 42.109175] panic+0x26a/0x50e [ 42.112355] ? __warn_printk+0xf3/0xf3 [ 42.116354] ? ip_rt_bug+0x1d/0x30 [ 42.119908] ? __probe_kernel_read+0x16c/0x1b0 [ 42.124479] ? __warn.cold+0x5/0x46 [ 42.128130] ? __warn+0xe4/0x1c0 [ 42.131505] ? ip_rt_bug+0x1d/0x30 [ 42.135049] __warn.cold+0x20/0x46 [ 42.138580] ? ip_rt_bug+0x1d/0x30 [ 42.142107] report_bug+0x262/0x2a0 [ 42.145736] do_error_trap+0x1d7/0x310 [ 42.149694] ? math_error+0x310/0x310 [ 42.153539] ? irq_work_queue+0x2b/0x80 [ 42.157517] ? wake_up_klogd+0x8c/0xc0 [ 42.161400] ? vprintk_emit+0x1d0/0x6e0 [ 42.165369] ? trace_hardirqs_off_caller+0x55/0x210 [ 42.170384] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.175221] invalid_op+0x14/0x20 [ 42.178750] RIP: 0010:ip_rt_bug+0x1d/0x30 [ 42.182882] Code: a5 fb e9 63 ff ff ff 66 0f 1f 44 00 00 55 48 89 d5 e8 47 e0 6f fb 48 89 ef e8 df 4b a0 ff 48 c7 c7 40 af 11 88 e8 7c fd 5a fb <0f> 0b 31 c0 5d c3 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 41 54 49 [ 42.201768] RSP: 0018:ffff8880a6667330 EFLAGS: 00010282 [ 42.207125] RAX: 0000000000000024 RBX: 0000000000000000 RCX: 0000000000000000 [ 42.214397] RDX: 0000000000000000 RSI: ffffffff8152d3a1 RDI: ffffed1014ccce58 [ 42.221667] RBP: ffff88809f0b1a00 R08: 0000000000000024 R09: ffffed1015ce5079 [ 42.228932] R10: ffffed1015ce5078 R11: ffff8880ae7283c7 R12: ffff88809e0b4100 [ 42.236190] R13: ffff88809f0b1a00 R14: ffff8880a623a600 R15: ffff88809f0b1a58 [ 42.243463] ? vprintk_func+0x81/0x17e [ 42.247348] ip_local_out+0xaf/0x170 [ 42.256046] ip_send_skb+0x3e/0xe0 [ 42.259571] ip_push_pending_frames+0x5f/0x80 [ 42.264091] icmp_push_reply+0x3b8/0x530 [ 42.268157] __icmp_send+0xcb6/0x14a0 [ 42.271945] ? icmp_route_lookup.constprop.0+0x13c0/0x13c0 [ 42.277563] ? ipt_do_table+0xd2f/0x1840 [ 42.281610] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 42.286784] ? __ip_options_compile+0x88a/0x16f0 [ 42.291531] ? ip_options_fragment+0x2a0/0x2a0 [ 42.296097] ? ip_route_input_noref+0x168/0x250 [ 42.300751] ? ip_options_compile+0xad/0xf0 [ 42.305057] ip_options_compile+0xad/0xf0 [ 42.309206] ? __ip_options_compile+0x16f0/0x16f0 [ 42.314046] ip_rcv_finish_core.isra.0+0x67f/0x1a90 [ 42.319059] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 42.324259] ip_rcv_finish+0x142/0x2e0 [ 42.328208] ip_rcv+0xd0/0x3d0 [ 42.331394] ? ip_local_deliver+0x4f0/0x4f0 [ 42.335716] ? ip_rcv_finish_core.isra.0+0x1a90/0x1a90 [ 42.340986] ? ip_local_deliver+0x4f0/0x4f0 [ 42.345295] __netif_receive_skb_one_core+0xf5/0x160 [ 42.350385] ? __netif_receive_skb_core+0x2e80/0x2e80 [ 42.355561] ? lock_acquire+0x170/0x400 [ 42.359518] ? netif_receive_skb_internal+0x77/0x400 [ 42.364610] __netif_receive_skb+0x27/0x1c0 [ 42.368918] netif_receive_skb_internal+0xf9/0x400 [ 42.374326] ? __lock_is_held+0xad/0x140 [ 42.378377] ? __netif_receive_skb+0x1c0/0x1c0 [ 42.382993] ? rcu_read_lock_sched_held+0x10a/0x130 [ 42.387995] tun_rx_batched.isra.0+0x483/0x7d0 [ 42.392574] ? tun_sock_write_space+0x1c0/0x1c0 [ 42.397234] ? tun_get_user+0x2a67/0x4930 [ 42.401369] ? lock_acquire+0x170/0x400 [ 42.405334] ? tun_get_user+0x11bf/0x4930 [ 42.409467] ? check_preemption_disabled+0x41/0x280 [ 42.414469] tun_get_user+0x1359/0x4930 [ 42.418460] ? compat_ifr_data_ioctl+0x160/0x160 [ 42.423214] ? tun_build_skb.isra.0+0x1960/0x1960 [ 42.428051] ? find_held_lock+0x2d/0x110 [ 42.432105] ? lock_downgrade+0x740/0x740 [ 42.436287] ? check_preemption_disabled+0x41/0x280 [ 42.442695] tun_chr_write_iter+0xb0/0x147 [ 42.446935] __vfs_write+0x512/0x760 [ 42.450645] ? kernel_read+0x110/0x110 [ 42.454520] ? avc_policy_seqno+0x9/0x70 [ 42.458574] ? selinux_file_permission+0x87/0x520 [ 42.463400] ? security_file_permission+0x84/0x220 [ 42.468316] vfs_write+0x206/0x550 [ 42.471842] ksys_write+0x12b/0x2a0 [ 42.475450] ? __ia32_sys_read+0xb0/0xb0 [ 42.479502] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 42.484255] ? trace_hardirqs_off_caller+0x55/0x210 [ 42.489272] ? do_syscall_64+0x21/0x620 [ 42.493245] do_syscall_64+0xf9/0x620 [ 42.497056] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.502239] RIP: 0033:0x440699 [ 42.505417] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 42.524460] RSP: 002b:00007ffc6bd7ff98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 42.532207] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440699 [ 42.539510] RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 [ 42.546773] RBP: 0000000000000000 R08: 0000000000002c00 R09: 00007ffc0000000d [ 42.554024] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401f20 [ 42.561277] R13: 0000000000401fb0 R14: 0000000000000000 R15: 0000000000000000 [ 42.570068] Kernel Offset: disabled [ 42.573882] Rebooting in 86400 seconds..